Spring Boot缓存

@SpringBootApplication
@EnableCaching 
public class SpringBootCachingApplication 
{
public static void main(String[] args) 
{
SpringApplication.run(SpringBootCachingApplication.class, args);
}
}

@CacheConfig(cacheNames={"employee"}) 
public class UserService
{
//some code
}

@Caching(evict = {@CacheEvict("phone_number"), @CacheEvict(value="directory", key="#student.id") })public String getAddress(Student student) 
{
//some code
}

@Cacheable(value="cacheStudentInfo", key="#id")public List studentInfo()
{
//some code 
return studentDetails;
}

@Cacheable(value="student", condition="#name.length<20")public Student findStudent(String name)
{
//some code
}

@CacheEvict(allEntries=true)

@CacheEvict(key="#student.stud_name")

@CacheEvict(value="student_data", allEntries=true) //removing all entries from the cache
public String getNames(Student student) 
{
//some code
}

@CachePut(cacheNames="employee", key="#id")  //updating cachepublic Employee updateEmp(ID id, EmployeeData data)
{
//some code
}

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.0.M1</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <groupId>com.nhooo</groupId>
  <artifactId>spring-boot-cache-example</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>spring-boot-cache-example</name>
  <description>Demo project for Spring Boot</description>
  <properties>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-cache</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupId>org.junit.vintage</groupId>
          <artifactId>junit-vintage-engine</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
  <repositories>
    <repository>
      <id>spring-milestones</id>
      <name>Spring Milestones</name>
      <url>https://repo.spring.io/milestone</url>
    </repository>
  </repositories>
  <pluginRepositories>
    <pluginRepository>
      <id>spring-milestones</id>
      <name>Spring Milestones</name>
      <url>https://repo.spring.io/milestone</url>
    </pluginRepository>
  </pluginRepositories>
</project>

SpringBootCacheExampleApplication.java
package com.nhooo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
@SpringBootApplication
//enabling caching
@EnableCaching
public class SpringBootCacheExampleApplication 
{
public static void main(String[] args) 
{
SpringApplication.run(SpringBootCacheExampleApplication.class, args);
}
}

package com.nhooo.model;
public class Customer 
{
    private int accountno;
    private String customername;
    private String accounttype;
    private double balance;
    public Customer(int accountno, String customername, String accounttype, double balance) 
    {
        this.accountno = accountno;
        this.customername = customername;
        this.accounttype = accounttype;
        this.balance = balance;
    }
    public int getAccountno() 
    {
        return accountno;
    }
    public void setAccountno(int accountno) 
    {
        this.accountno = accountno;
    }
    public String getCustomername() 
    {
        return customername;
    }
    public void setCustomername(String customername) 
    {
        this.customername = customername;
    }
    public String getAccounttype() 
    {
        return accounttype;
    }
    public void setAccounttype(String accounttype) 
    {
        this.accounttype = accounttype;
    }
    public double getBalance() 
    {
        return balance;
    }
    public void setBalance(double balance) 
    {
        this.balance = balance;
    }
}

package com.nhooo.controller;
import java.util.Arrays;
import java.util.List;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.nhooo.model.Customer;
@RestController
public class CustomerController 
{
    @RequestMapping("/customerinfo")
    //defines a cache for method's return value
    @Cacheable(value="customerInfo")
    public List customerInformation()
    {
        System.out.println("customer information from cache");
        //adding customer detail in the List
          List detail=Arrays.asList(new Customer(5126890,"Charlie Puth","Current A/c", 450000.00),
                        new Customer(7620015,"Andrew Flintoff","Saving A/c", 210089.00)
                       );
        return detail;
    }
}